GB378831A - Improvements in or relating to wireless direction finding apparatus - Google Patents
Improvements in or relating to wireless direction finding apparatusInfo
- Publication number
- GB378831A GB378831A GB10749/32A GB1074932A GB378831A GB 378831 A GB378831 A GB 378831A GB 10749/32 A GB10749/32 A GB 10749/32A GB 1074932 A GB1074932 A GB 1074932A GB 378831 A GB378831 A GB 378831A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pointer
- roller
- unity
- cam
- driving member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000012937 correction Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 230000011664 signaling Effects 0.000 abstract 1
- 238000006467 substitution reaction Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Mobile Radio Communication Systems (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Transmission Devices (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
378,831. Directive wireless signalling. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. April 14, 1932, No. 10749. Convention date, April 14, 1931. [Class 40 (v).] For correcting the pointer readings of a radiogoniometer &c. for quadrantal and other errors, a parallelogram drive is used between the rotating member and the pointer in which the transmission ratio of the drive is substantially unity or greater than unity. In one embodiment, Fig. 4, the parallelogram drive comprises the pointer z moving over scale a, the driving member p attached to the rotating member of the direction finder, and members z<1> and p<1> parallel thereto, p<1> being adjustable in length by a nut s. The pointer z and driving member p are independently pivoted at o and near the pivotal joint o<1> between members z<1>, p<1> is a roller r bearing on a fixed cam k shaped to give the appropriate corrections to the pointer readings. The ratio of the movement of the pointer z and the roller r is made substantially unity by making the pivotal joint u between the pointer z and member p<1> as near to the pointer tip as possible and positioning the roller r as near as possible to the pivot o<1>. In a modification, Fig. 7 (not shown), this ratio is made greater than unity by extending the member z<1> beyond the point o<1> and mounting the roller r at its extended end. The cam k may be made easily detachable for the substitution of other cams for correcting for other wave-lengths or draughts in the case of shipboard installations. These cams may be cut from blanks M, Fig. 6, with a basic circle ko graduated in degrees with a family of arcs 1 of radius z\ Fig. 4, passing through these graduations. On these arcs are set out experimentally determined errors and a curve drawn to connect these points, the cam being cut to correspond thereto. The blanks are provided with positioning holes n, x. A known device for error correction is also described in which the pointer z, Fig. 2, is moved from the driving member p through a curved arm b bearing a roller r engaging a fixed cam k.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE378831X | 1931-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB378831A true GB378831A (en) | 1932-08-18 |
Family
ID=6344620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10749/32A Expired GB378831A (en) | 1931-04-14 | 1932-04-14 | Improvements in or relating to wireless direction finding apparatus |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2031073A (en) |
| FR (1) | FR733851A (en) |
| GB (1) | GB378831A (en) |
| NL (1) | NL32964C (en) |
-
0
- NL NL32964D patent/NL32964C/xx active
-
1932
- 1932-03-18 FR FR733851D patent/FR733851A/en not_active Expired
- 1932-03-28 US US601573A patent/US2031073A/en not_active Expired - Lifetime
- 1932-04-14 GB GB10749/32A patent/GB378831A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2031073A (en) | 1936-02-18 |
| NL32964C (en) | |
| FR733851A (en) | 1932-10-12 |
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